SWR WM12 combo to Ampeg VR micro

with one of the Micro 2-10 cabs.
Is this a significant improvement?
100w combo rear ported 12" to 200w & 2 sealed 10"s?
The SWR almost cuts the mustard, esp w/an extension cab, but not quite.
Like the idea of this but afraid it won't be a big enough improvement to justify the investment.
Dont play in a stupid loud band but I need a bit more.
I play Upright 60% and NS Guild Starfire or Pbass 40%.